This patch updates to support cq record doorbell for
the kernel space.
Signed-off-by: Yixian Liu <liuyixian@xxxxxxxxxx>
Signed-off-by: Lijun Ou <oulijun@xxxxxxxxxx>
Signed-off-by: Wei Hu (Xavier) <xavier.huwei@xxxxxxxxxx>
Signed-off-by: Shaobo Xu <xushaobo2@xxxxxxxxxx>
Reviewed-by: Jason Gunthorpe <jgg@xxxxxxxxxxxx>
Reviewed-by: Leon Romanovsky <leonro@xxxxxxxxxxxx>
---
drivers/infiniband/hw/hns/hns_roce_cq.c | 17 ++++++++++++++++-
drivers/infiniband/hw/hns/hns_roce_device.h | 1 +
drivers/infiniband/hw/hns/hns_roce_hw_v2.c | 19 +------------------
3 files changed, 18 insertions(+), 19 deletions(-)
diff --git a/drivers/infiniband/hw/hns/hns_roce_cq.c b/drivers/infiniband/hw/hns/hns_roce_cq.c
index ebedcf3..6ae9c45 100644
--- a/drivers/infiniband/hw/hns/hns_roce_cq.c
+++ b/drivers/infiniband/hw/hns/hns_roce_cq.c
@@ -367,12 +367,21 @@ struct ib_cq *hns_roce_ib_create_cq(struct ib_device *ib_dev,
/* Get user space parameters */
uar = &to_hr_ucontext(context)->uar;
} else {
+ if (hr_dev->caps.flags & HNS_ROCE_CAP_FLAG_RECORD_DB) {
+ ret = hns_roce_alloc_db(hr_dev, &hr_cq->db, 1);
+ if (ret)
+ goto err_cq;
+
+ hr_cq->set_ci_db = hr_cq->db.db_record;
+ *hr_cq->set_ci_db = 0;
+ }
+
/* Init mmt table and write buff address to mtt table */
ret = hns_roce_ib_alloc_cq_buf(hr_dev, &hr_cq->hr_buf,
cq_entries);
if (ret) {
dev_err(dev, "Failed to alloc_cq_buf.\n");
- goto err_cq;
+ goto err_db;
}
uar = &hr_dev->priv_uar;
@@ -434,6 +443,10 @@ struct ib_cq *hns_roce_ib_create_cq(struct ib_device *ib_dev,
hns_roce_ib_free_cq_buf(hr_dev, &hr_cq->hr_buf,
hr_cq->ib_cq.cqe);
+err_db:
+ if (!context && (hr_dev->caps.flags & HNS_ROCE_CAP_FLAG_RECORD_DB))
+ hns_roce_free_db(hr_dev, &hr_cq->db);
+
err_cq:
kfree(hr_cq);
return ERR_PTR(ret);
@@ -463,6 +476,8 @@ int hns_roce_ib_destroy_cq(struct ib_cq *ib_cq)
/* Free the buff of stored cq */
hns_roce_ib_free_cq_buf(hr_dev, &hr_cq->hr_buf,
ib_cq->cqe);
+ if (hr_dev->caps.flags & HNS_ROCE_CAP_FLAG_RECORD_DB)
+ hns_roce_free_db(hr_dev, &hr_cq->db);
}
kfree(hr_cq);
diff --git a/drivers/infiniband/hw/hns/hns_roce_device.h b/drivers/infiniband/hw/hns/hns_roce_device.h
index 69d8c3f..0bd00ea 100644
--- a/drivers/infiniband/hw/hns/hns_roce_device.h
+++ b/drivers/infiniband/hw/hns/hns_roce_device.h
@@ -395,6 +395,7 @@ struct hns_roce_cq {
struct hns_roce_uar *uar;
u32 cq_depth;
u32 cons_index;
+ u32 *set_ci_db;
void __iomem *cq_db_l;
u16 *tptr_addr;
int arm_sn;
diff --git a/drivers/infiniband/hw/hns/hns_roce_hw_v2.c b/drivers/infiniband/hw/hns/hns_roce_hw_v2.c
index 5dc57f6..6bc48ed 100644
--- a/drivers/infiniband/hw/hns/hns_roce_hw_v2.c
+++ b/drivers/infiniband/hw/hns/hns_roce_hw_v2.c
@@ -1481,24 +1481,7 @@ static struct hns_roce_v2_cqe *next_cqe_sw_v2(struct hns_roce_cq *hr_cq)
static void hns_roce_v2_cq_set_ci(struct hns_roce_cq *hr_cq, u32 cons_index)
{
- struct hns_roce_v2_cq_db cq_db;
-
- cq_db.byte_4 = 0;
- cq_db.parameter = 0;
-
- roce_set_field(cq_db.byte_4, V2_CQ_DB_BYTE_4_TAG_M,
- V2_CQ_DB_BYTE_4_TAG_S, hr_cq->cqn);
- roce_set_field(cq_db.byte_4, V2_CQ_DB_BYTE_4_CMD_M,
- V2_CQ_DB_BYTE_4_CMD_S, HNS_ROCE_V2_CQ_DB_PTR);
-
- roce_set_field(cq_db.parameter, V2_CQ_DB_PARAMETER_CONS_IDX_M,
- V2_CQ_DB_PARAMETER_CONS_IDX_S,
- cons_index & ((hr_cq->cq_depth << 1) - 1));
- roce_set_field(cq_db.parameter, V2_CQ_DB_PARAMETER_CMD_SN_M,
- V2_CQ_DB_PARAMETER_CMD_SN_S, 1);
-
- hns_roce_write64_k((__be32 *)&cq_db, hr_cq->cq_db_l);
-
+ *hr_cq->set_ci_db = cons_index & 0xffffff;
}
static void __hns_roce_v2_cq_clean(struct hns_roce_cq *hr_cq, u32 qpn,
--
1.9.1
--
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